/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:20:25,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:20:25,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:20:25,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:20:25,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:20:25,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:20:25,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:20:25,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:20:25,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:20:25,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:20:25,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:20:25,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:20:25,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:20:25,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:20:25,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:20:25,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:20:25,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:20:25,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:20:25,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:20:25,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:20:25,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:20:25,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:20:25,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:20:25,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:20:25,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:20:25,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:20:25,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:20:25,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:20:25,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:20:25,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:20:25,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:20:25,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:20:25,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:20:25,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:20:25,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:20:25,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:20:25,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:20:25,843 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:20:25,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:20:25,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:20:25,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:20:25,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:20:25,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:20:25,846 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:20:25,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:20:25,846 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:20:25,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:20:25,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:20:25,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:20:25,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:20:25,848 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:20:26,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:20:26,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:20:26,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:20:26,194 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:20:26,194 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:20:26,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-01-27 18:20:27,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:20:27,991 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:20:27,992 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-01-27 18:20:28,021 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82845c6fb/28d889b704ae4d9baf9c99c50f496594/FLAG6167fb131 [2023-01-27 18:20:28,051 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82845c6fb/28d889b704ae4d9baf9c99c50f496594 [2023-01-27 18:20:28,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:20:28,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:20:28,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:20:28,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:20:28,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:20:28,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc4eb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28, skipping insertion in model container [2023-01-27 18:20:28,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:20:28,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:20:28,354 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] [2023-01-27 18:20:28,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:20:28,533 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:20:28,542 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i[945,958] [2023-01-27 18:20:28,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:20:28,621 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:20:28,621 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:20:28,626 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:20:28,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28 WrapperNode [2023-01-27 18:20:28,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:20:28,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:20:28,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:20:28,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:20:28,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,705 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-01-27 18:20:28,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:20:28,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:20:28,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:20:28,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:20:28,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:20:28,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:20:28,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:20:28,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:20:28,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (1/1) ... [2023-01-27 18:20:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:20:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:20:28,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 18:20:28,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 18:20:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:20:28,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:20:28,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:20:28,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:20:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:20:28,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:20:28,819 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:20:29,006 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:20:29,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:20:29,288 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:20:29,293 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:20:29,293 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:20:29,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:20:29 BoogieIcfgContainer [2023-01-27 18:20:29,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:20:29,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:20:29,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:20:29,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:20:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:20:28" (1/3) ... [2023-01-27 18:20:29,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57962479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:20:29, skipping insertion in model container [2023-01-27 18:20:29,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:20:28" (2/3) ... [2023-01-27 18:20:29,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57962479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:20:29, skipping insertion in model container [2023-01-27 18:20:29,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:20:29" (3/3) ... [2023-01-27 18:20:29,317 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-01-27 18:20:29,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:20:29,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:20:29,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:20:29,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:20:29,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-01-27 18:20:29,608 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-01-27 18:20:29,608 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:20:29,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-27 18:20:29,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-01-27 18:20:29,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-01-27 18:20:29,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:20:29,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-27 18:20:29,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-27 18:20:29,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-01-27 18:20:29,680 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-01-27 18:20:29,680 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:20:29,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-27 18:20:29,681 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-27 18:20:31,933 INFO L134 LiptonReduction]: Checked pairs total: 1960 [2023-01-27 18:20:31,933 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-27 18:20:31,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:20:31,952 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61aefd94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:20:31,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:20:31,957 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-27 18:20:31,957 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:20:31,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:31,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:31,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:31,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1939323800, now seen corresponding path program 1 times [2023-01-27 18:20:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284549048] [2023-01-27 18:20:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284549048] [2023-01-27 18:20:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284549048] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:32,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:32,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:20:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556972476] [2023-01-27 18:20:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:32,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:20:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:20:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:20:32,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-27 18:20:32,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:32,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-27 18:20:32,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:32,653 INFO L130 PetriNetUnfolder]: 289/462 cut-off events. [2023-01-27 18:20:32,653 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-27 18:20:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 462 events. 289/462 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1774 event pairs, 85 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 950. Up to 407 conditions per place. [2023-01-27 18:20:32,674 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-01-27 18:20:32,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 121 flow [2023-01-27 18:20:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:20:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:20:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-01-27 18:20:32,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734265734265734 [2023-01-27 18:20:32,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-01-27 18:20:32,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-01-27 18:20:32,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:32,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-01-27 18:20:32,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,713 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 246 transitions. [2023-01-27 18:20:32,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 121 flow [2023-01-27 18:20:32,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:20:32,726 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-01-27 18:20:32,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-01-27 18:20:32,732 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-27 18:20:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-01-27 18:20:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:32,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:20:32,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:32,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 10503732, now seen corresponding path program 1 times [2023-01-27 18:20:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470429995] [2023-01-27 18:20:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470429995] [2023-01-27 18:20:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470429995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:32,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:32,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753171277] [2023-01-27 18:20:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:32,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-27 18:20:32,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:32,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:32,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-27 18:20:32,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:33,108 INFO L130 PetriNetUnfolder]: 241/442 cut-off events. [2023-01-27 18:20:33,108 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-01-27 18:20:33,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 442 events. 241/442 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1979 event pairs, 83 based on Foata normal form. 40/481 useless extension candidates. Maximal degree in co-relation 944. Up to 138 conditions per place. [2023-01-27 18:20:33,113 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 21 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2023-01-27 18:20:33,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 150 flow [2023-01-27 18:20:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:20:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:20:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-01-27 18:20:33,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-01-27 18:20:33,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-01-27 18:20:33,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-01-27 18:20:33,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:33,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-01-27 18:20:33,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,122 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 329 transitions. [2023-01-27 18:20:33,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 150 flow [2023-01-27 18:20:33,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:20:33,123 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-01-27 18:20:33,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-01-27 18:20:33,124 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-27 18:20:33,124 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-01-27 18:20:33,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:33,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:20:33,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:33,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1896609912, now seen corresponding path program 1 times [2023-01-27 18:20:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240874565] [2023-01-27 18:20:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240874565] [2023-01-27 18:20:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240874565] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742761805] [2023-01-27 18:20:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:33,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:33,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-27 18:20:33,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:33,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-27 18:20:33,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:33,560 INFO L130 PetriNetUnfolder]: 119/232 cut-off events. [2023-01-27 18:20:33,560 INFO L131 PetriNetUnfolder]: For 200/203 co-relation queries the response was YES. [2023-01-27 18:20:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 232 events. 119/232 cut-off events. For 200/203 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 29 based on Foata normal form. 19/247 useless extension candidates. Maximal degree in co-relation 585. Up to 139 conditions per place. [2023-01-27 18:20:33,562 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2023-01-27 18:20:33,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 241 flow [2023-01-27 18:20:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-01-27 18:20:33,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650349650349651 [2023-01-27 18:20:33,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-01-27 18:20:33,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-01-27 18:20:33,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:33,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-01-27 18:20:33,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,566 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 5 states and 404 transitions. [2023-01-27 18:20:33,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 241 flow [2023-01-27 18:20:33,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:20:33,568 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2023-01-27 18:20:33,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-01-27 18:20:33,569 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-01-27 18:20:33,572 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2023-01-27 18:20:33,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:33,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:33,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:20:33,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:33,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1386944140, now seen corresponding path program 1 times [2023-01-27 18:20:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:33,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958560540] [2023-01-27 18:20:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958560540] [2023-01-27 18:20:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958560540] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:33,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559541494] [2023-01-27 18:20:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:33,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:20:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:20:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:20:33,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-27 18:20:33,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:33,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-27 18:20:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:33,843 INFO L130 PetriNetUnfolder]: 98/208 cut-off events. [2023-01-27 18:20:33,843 INFO L131 PetriNetUnfolder]: For 356/387 co-relation queries the response was YES. [2023-01-27 18:20:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 208 events. 98/208 cut-off events. For 356/387 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 14 based on Foata normal form. 32/236 useless extension candidates. Maximal degree in co-relation 701. Up to 99 conditions per place. [2023-01-27 18:20:33,844 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 32 selfloop transitions, 13 changer transitions 8/57 dead transitions. [2023-01-27 18:20:33,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2023-01-27 18:20:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:20:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:20:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2023-01-27 18:20:33,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614385614385614 [2023-01-27 18:20:33,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2023-01-27 18:20:33,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2023-01-27 18:20:33,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:33,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2023-01-27 18:20:33,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,859 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 7 states and 562 transitions. [2023-01-27 18:20:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2023-01-27 18:20:33,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:20:33,877 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 206 flow [2023-01-27 18:20:33,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-01-27 18:20:33,878 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-27 18:20:33,879 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 206 flow [2023-01-27 18:20:33,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:33,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:33,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:33,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:20:33,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:33,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1415012507, now seen corresponding path program 1 times [2023-01-27 18:20:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044666675] [2023-01-27 18:20:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:34,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044666675] [2023-01-27 18:20:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044666675] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:34,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:34,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:20:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063615606] [2023-01-27 18:20:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:20:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:20:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:20:34,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-27 18:20:34,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:34,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-27 18:20:34,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:34,242 INFO L130 PetriNetUnfolder]: 84/187 cut-off events. [2023-01-27 18:20:34,243 INFO L131 PetriNetUnfolder]: For 510/542 co-relation queries the response was YES. [2023-01-27 18:20:34,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 187 events. 84/187 cut-off events. For 510/542 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 12 based on Foata normal form. 24/207 useless extension candidates. Maximal degree in co-relation 726. Up to 86 conditions per place. [2023-01-27 18:20:34,247 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 17 changer transitions 7/57 dead transitions. [2023-01-27 18:20:34,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 426 flow [2023-01-27 18:20:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:20:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:20:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2023-01-27 18:20:34,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501165501165501 [2023-01-27 18:20:34,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2023-01-27 18:20:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2023-01-27 18:20:34,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:34,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2023-01-27 18:20:34,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,257 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,257 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 206 flow. Second operand 9 states and 708 transitions. [2023-01-27 18:20:34,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 426 flow [2023-01-27 18:20:34,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 396 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-27 18:20:34,277 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 232 flow [2023-01-27 18:20:34,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-01-27 18:20:34,279 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-01-27 18:20:34,279 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 232 flow [2023-01-27 18:20:34,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:34,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:34,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:20:34,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:34,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash -961641232, now seen corresponding path program 1 times [2023-01-27 18:20:34,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041123036] [2023-01-27 18:20:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041123036] [2023-01-27 18:20:34,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041123036] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:34,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:34,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99212595] [2023-01-27 18:20:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-01-27 18:20:34,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:34,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-01-27 18:20:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:34,607 INFO L130 PetriNetUnfolder]: 160/323 cut-off events. [2023-01-27 18:20:34,607 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-01-27 18:20:34,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 323 events. 160/323 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1425 event pairs, 12 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1274. Up to 182 conditions per place. [2023-01-27 18:20:34,609 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 33 selfloop transitions, 7 changer transitions 37/78 dead transitions. [2023-01-27 18:20:34,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 713 flow [2023-01-27 18:20:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-01-27 18:20:34,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-01-27 18:20:34,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-01-27 18:20:34,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-01-27 18:20:34,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:34,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-01-27 18:20:34,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,613 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 232 flow. Second operand 5 states and 396 transitions. [2023-01-27 18:20:34,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 713 flow [2023-01-27 18:20:34,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 572 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-01-27 18:20:34,631 INFO L231 Difference]: Finished difference. Result has 50 places, 27 transitions, 158 flow [2023-01-27 18:20:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=27} [2023-01-27 18:20:34,632 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-27 18:20:34,632 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 27 transitions, 158 flow [2023-01-27 18:20:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:34,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:20:34,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:34,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -528883398, now seen corresponding path program 2 times [2023-01-27 18:20:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055252400] [2023-01-27 18:20:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055252400] [2023-01-27 18:20:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055252400] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893967052] [2023-01-27 18:20:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:34,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:34,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-27 18:20:34,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 27 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:34,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:34,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-27 18:20:34,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:34,997 INFO L130 PetriNetUnfolder]: 47/115 cut-off events. [2023-01-27 18:20:34,997 INFO L131 PetriNetUnfolder]: For 234/236 co-relation queries the response was YES. [2023-01-27 18:20:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 115 events. 47/115 cut-off events. For 234/236 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 362 event pairs, 7 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 406. Up to 51 conditions per place. [2023-01-27 18:20:34,998 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 24 selfloop transitions, 1 changer transitions 19/46 dead transitions. [2023-01-27 18:20:34,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 338 flow [2023-01-27 18:20:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:20:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:20:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-01-27 18:20:35,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-01-27 18:20:35,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-01-27 18:20:35,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-01-27 18:20:35,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:35,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-01-27 18:20:35,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,008 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,008 INFO L175 Difference]: Start difference. First operand has 50 places, 27 transitions, 158 flow. Second operand 4 states and 329 transitions. [2023-01-27 18:20:35,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 338 flow [2023-01-27 18:20:35,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 316 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-27 18:20:35,009 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 113 flow [2023-01-27 18:20:35,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-01-27 18:20:35,010 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-27 18:20:35,010 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 113 flow [2023-01-27 18:20:35,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:35,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:35,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:20:35,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:20:35,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash 154330364, now seen corresponding path program 3 times [2023-01-27 18:20:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847724646] [2023-01-27 18:20:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847724646] [2023-01-27 18:20:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847724646] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786001747] [2023-01-27 18:20:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:35,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:35,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-27 18:20:35,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:35,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-27 18:20:35,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:35,227 INFO L130 PetriNetUnfolder]: 21/61 cut-off events. [2023-01-27 18:20:35,227 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-01-27 18:20:35,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 61 events. 21/61 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 5 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 218. Up to 27 conditions per place. [2023-01-27 18:20:35,228 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-01-27 18:20:35,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 189 flow [2023-01-27 18:20:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:20:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:20:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-01-27 18:20:35,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-01-27 18:20:35,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-01-27 18:20:35,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-01-27 18:20:35,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:35,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-01-27 18:20:35,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,246 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 113 flow. Second operand 4 states and 319 transitions. [2023-01-27 18:20:35,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 189 flow [2023-01-27 18:20:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 180 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 18:20:35,248 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-01-27 18:20:35,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-01-27 18:20:35,249 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-27 18:20:35,249 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-01-27 18:20:35,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:35,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:20:35,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:20:35,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:20:35,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:20:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:20:35,252 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-01-27 18:20:35,254 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:20:35,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:20:35,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:20:35 BasicIcfg [2023-01-27 18:20:35,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:20:35,262 INFO L158 Benchmark]: Toolchain (without parser) took 7207.66ms. Allocated memory was 427.8MB in the beginning and 513.8MB in the end (delta: 86.0MB). Free memory was 376.8MB in the beginning and 311.8MB in the end (delta: 65.0MB). Peak memory consumption was 152.6MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 265.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.25ms. Allocated memory is still 427.8MB. Free memory was 376.8MB in the beginning and 356.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.79ms. Allocated memory is still 427.8MB. Free memory was 356.7MB in the beginning and 354.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: Boogie Preprocessor took 40.08ms. Allocated memory is still 427.8MB. Free memory was 354.5MB in the beginning and 353.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: RCFGBuilder took 548.47ms. Allocated memory is still 427.8MB. Free memory was 353.1MB in the beginning and 339.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,262 INFO L158 Benchmark]: TraceAbstraction took 5964.93ms. Allocated memory was 427.8MB in the beginning and 513.8MB in the end (delta: 86.0MB). Free memory was 338.4MB in the beginning and 311.8MB in the end (delta: 26.6MB). Peak memory consumption was 114.9MB. Max. memory is 16.0GB. [2023-01-27 18:20:35,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 265.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 570.25ms. Allocated memory is still 427.8MB. Free memory was 376.8MB in the beginning and 356.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 77.79ms. Allocated memory is still 427.8MB. Free memory was 356.7MB in the beginning and 354.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.08ms. Allocated memory is still 427.8MB. Free memory was 354.5MB in the beginning and 353.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 548.47ms. Allocated memory is still 427.8MB. Free memory was 353.1MB in the beginning and 339.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5964.93ms. Allocated memory was 427.8MB in the beginning and 513.8MB in the end (delta: 86.0MB). Free memory was 338.4MB in the beginning and 311.8MB in the end (delta: 26.6MB). Peak memory consumption was 114.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1960 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 392 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 6 mSDtfsCounter, 392 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:20:35,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...